The 'Call the Midwife' Season 12 Teaser Welcomes a New Sister to Nonnatus House

Though we may have only just celebrated the festive season with our favorite midwives and nuns of Nonnatus House on Call the Midwife, the time has come to turn our thoughts toward the next proper season of the show.

Because while Season 12 — yes, really! — won’t arrive in America until early Spring, as is PBS tradition, the new episodes will begin airing this January on BBC One. In the U.K., the festive special usually serves double duty as both a holiday celebration and the kick-off to a new season of the show, which means that we at least get a better idea about what to expect from the new slate of episodes. And, if we’re lucky, a glimpse of some new footage too.

As with any new season of Call the Midwife, changes are in store. It’s 1968, and time marches on, even as the residents of Poplar work to get back to normal following the devastating train crash that closed Season 11. After the events of the holiday special, Trixie and Matthew are (finally!) engaged, and we have said goodbye (at least for now) to both Sister Hilda (Fenella Woolgar) and Sister Francis (Ella Bruccoleri), who have returned to the Mother House.